This is a very complex and sad phenomenon. To speak openly: It is a Trojan horse in the Church. I know them very well because I was an episcopal delegate for them for several years in Kazakhstan in Karaganda. And I assisted their Masses and meetings and I read the writings of Kiko, their founder, so I know them well. When I speak openly without diplomacy, I have to state: The Neocathecumenate is a Protestant-Jewishcommunity inside the Church with a Catholic decoration only. The most dangerous aspect is regarding the Eucharist, because the Eucharist is the heart of the Church. When the heart is in a bad way, the whole body is in a bad way. For the Neocatechumenate, the Eucharist is primarily a fraternal banquet. This is a Protestant, a typically Lutheran attitude.They reject the idea and the teaching of the Eucharist as a true sacrifice. They even hold that the traditional teaching of, and belief in, the Eucharist as a sacrifice is not Christian but pagan.This is completely absurd, this is typically Lutheran, Protestant. During their liturgies of the Eucharist they treat the Most Holy Sacrament in such a banal manner, that it sometimes becomes horrible.They sit while receiving Holy Communion, and then they lose the fragments because they do not take care of them, and after Communion they dance instead of praying and adoring Jesus in silence. This is really worldly and pagan, naturalistic.
The main idea of the Neocathecumenate according their founder Kiko Argüello is the following: the Church had an ideal life only until Constantine in the 4th century, only this was effectively the real Church. And with Constantine the Church started to degenerate: doctrinal degeneration, liturgical and moral degeneration.And the Church reached the rock bottom of this degeneration of doctrine and liturgy with the decrees of the Council of Trent. However, contrary to his opinion, the opposite is true: this was one of the highlights of the history of the Church because of the clarity of doctrine and discipline. According to Kiko, the dark age of the Church lasted from the 4th century until the Second Vatican Council. It was only with Vatican Council II that light came into the Church. This is heresy because this is to say that the Holy Spirit abandoned the Church. And this is really sectarian and very much in line with Martin Luther, who said that until him the Church had been in darkness and it was only through him that there was light in the Church. The position of Kiko is fundamentally the same only that Kiko postulates the dark time of the Church from Constantine to Vatican II. So they misinterpret the Second Vatican Council. They say that they are apostles of Vatican II. Thus they justify all their heretical practices and teachings with Vatican II. This is a grave abuse.